Any of these guys that have tried to get an insecticide shot a about 10 more feet into the canopy
by boosting the input pressure, only to have your spray stream break up as you increase the pressure, will have an idea
of how the transfer shapes will affect the the scavenging. figure your medium that's being driven through the tunnel, what's the relative pressure where it exits?
The bug spry stream breaks up from the all of that extra energy just pushing outwards. in all directions.
you can get into that stream flow conditioning
https://en.wikipedia.org/wiki/Flow_conditioning
and help somewhat.
About Nozzle shape accuracy.
Ever tried to use a nozzle that someone dinged the end of? or reamed out with a drill bit or tip cleaner and now it sprays like a thumb over garden hose?
Or just has that little spritzy, kinda sidwies bit of liquid.
Kind of like having a tiny piece of trash in your (syphon type) paint gun.
You know how it just makes that crappy overspray off the side
and maybe a little sputtery dribble.
if it's a little worse of a bugger in the tip,then that sputzer bit almost wants to run back on the nozzle, instead.
maybe blowing a splattery, splotchy, kinda hard to get it all the cross that hood or whatever your painting.
Versious a nice smooth spray stream that you can send out in a nice predictable pattern and put it where you want it.
Now what if your goofy cousion is running the gun and doesn't belive in pouring through a filter?
And then next thing sets the gun down in the sun and He takes a lunch run
and decides to make a parts run also.
Well by time he gets back, the paint 's sorta gummed in the ol' nozzle again.
Bit too dry to pick out with a twig or matchstem.
Ahhh but here lays a little bitty nail and he thinks:
" there aint no way it's gonna hurt that old paint nozzle"
Well now the nozzle has sort of strait part in the hole that's still about
like the factory drilled it.
But he was was holding the nozzle in left hand and just ended up scraping on the right side of the hole, just tad more.
Well now, puts it back together and left side kinda sprays OK still.
the right side now is almost like it's about 15~20 degrees wider pattern
And got that kinda pissy like sorta throwing droplets in with the fine spray.
Well now you might see a bit of why I squawk about radius conditions and those little cutter wiggles
Aint just the ring hammering aspect that's on my mind.
Go back and look a the wash patterens on the domes, find that tiny swirl and start looking upstream.
There are several reasons to use the dental mirror and smooth those tunnel countors.
I'm trying to make some analogies here. I think if I can figure out some things that poeple can see and do, in other areas of your work or life,
Might be easier to catch on
and have that moment when what the portmasters are laying down for us,
begins to to morph into something the finaly makes sense to us.
= = =
But then again, It may just be that all of ya, should put me in a block list
untill the rest of this knee dope wears off of me !!
but here's that vid.
